/*
 * Copyright (c) 2008-2019 Haulmont.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.haulmont.charts.web.ui;

import com.haulmont.cuba.core.entity.KeyValueEntity;
import com.haulmont.cuba.gui.data.impl.CustomValueCollectionDatasource;

import java.util.Collection;
import java.util.Collections;
import java.util.Map;

public class PivotTableDatasource extends CustomValueCollectionDatasource {

    public static final String VALUES_PARAM = "values";

    @Override
    @SuppressWarnings("unchecked")
    protected Collection<KeyValueEntity> getEntities(Map<String, Object> params) {
        return (Collection<KeyValueEntity>) params.getOrDefault(VALUES_PARAM, Collections.emptyList());
    }
}
